Yes, Some Greenland Sharks Are Old, but 400 Years Old?!

Never ask a female her age — unless, of course, she’s a 16-foot-long Greenland shark and it’s for science.

The shark species was shown to have remarkable longevity, living up to 400 years and reaching sexual maturity around 150 years, according to a paper published Thursday in Science. The researchers estimated the ages of 28 female Greenland sharks by radiocarbon dating proteins in their eye lenses and relying on the bomb pulse — a spike in radioactivity released globally by nuclear weap

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